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Effects of Pursed-lip Breathing on Exercise Tolerance and Dynamic Hyperinflation in COPD

NCT01173328 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2010-08-02

No results posted yet for this study

Summary

Pursed-lip breathing (PLB) has been advocated to reduce respiratory rate and improve oxygen saturation in patients with chronic obstructive pulmonary disease (COPD) at rest. Although PLB is a strategy that potentially reduces expiratory flow limitation, there are only few studies addressing its effects on exercise.

This study aimed to assess the ability of PLB to change the breathing pattern, degree of dynamic hyperinflation (DH) and arterial oxygenation in COPD patients during exercise. Exercise tolerance was evaluated by endurance time and respiratory mechanics was evaluated by forced oscillation technique.

Conditions

Interventions

BEHAVIORAL

Pursed-lip breathing

Pursed-lip breathing involves a nasal inspiration followed by expiratory blowing against partially closed lips, avoiding forceful exhalation.

BEHAVIORAL

Normal Breathing

Sponsors & Collaborators

  • Universidade Federal do Rio de Janeiro

    lead OTHER

Principal Investigators

  • Fernando S Guimarães, PhD · Universidade Federal do Rio de Janeiro

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
40 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2007-03-31
Primary Completion
2009-10-31
Completion
2009-10-31

Countries

  • Brazil

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01173328 on ClinicalTrials.gov